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Unable to display all the lst in an arraylist

By : Machiazo
Date : August 01 2020, 11:00 PM
will help you I have an array of 4 list items and I am trying to display all of them on my recycler view but for some reason only the last list is being displayed. , Problem is in the loop:
code :
this.mStrings[i] = mStrings[i];
this.mStrings[this.mStrings.length+i] = mStrings[i]; 

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java regex/arraylist issue, unable to get matches/arraylist store new values

By : Manuel Garcia Sanche
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Your regex has a bunch of unescaped special-characters in it (i.e. things like + and , and . and : and | that have meaning to the regex parser and do not match literal text unless you escape them).
Personally I always escape all special characters in a regex, even for ones that have no special meaning to the regex parser. The issues caused by forgetting to escape one can be too confusing to debug for it to be worth risking not escaping something, in my opinion.
code :
String patternStr = "(https?|ftp|file)\\://[\\-a-zA-Z0-9\\+\\&\\@\\#/\\%\\?\\=\\~\\_\\|\\!\\:\\,\\.\\;]*[\\-a-zA-Z0-9\\+\\&\\@\\#/\\%\\=\\~\\_\\|]";

ArrayList won't populate ListView but I can display the items added to ArrayList

By : Nipu
Date : March 29 2020, 07:55 AM
will help you You are executing an AsyncTask which is giving a response after sometime, meanwhile the code of listView and it's adapter is already executed. You just need to add one line after the for loop like this :-
code :
 for (int i = 0; i < jsonArray.length(); i++) {
       JSONObject object = jsonArray.getJSONObject(i);
       String symptom = object.getString("symptom1");
       //Toast.makeText(SAMPLE.this, ""+symptom, Toast.LENGTH_SHORT).show();
       //Toast.makeText(Login.this,  ""+message+"\nYour name is: "+name+"\nYour email is: "+email,Toast.LENGTH_SHORT).show();
    //** Add This line **

how to retrieve Firebase json ArrayList inside Arraylist data and store it in Arraylist for display in Textview later

By : Mario Field
Date : March 29 2020, 07:55 AM
this one helps. You are referencing the node purchasebill, and then you are looping inside the direct children of purchasebill which are gameworld and datamination.
To solve your problem, you can add a reference to child datamination thus it won't loop inside gameworld, so you can do the following:
code :
myRef.child("datamination").addValueEventListener(new ValueEventListener() {
    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            billlistHelper = dataSnapshot.getValue(BilllistHelper.class);
            assert billlistHelper != null;
            for (DataSnapshot dd : dataSnapshot.child("datedata").getChildren(){
                dateDataHelper = dd.getValue(DateDataHelper.class);




Unable to display all the elements of an arraylist

By : user2957350
Date : March 29 2020, 07:55 AM
I hope this helps you . Menu driven program for adding and displaying employee details. Taking input from the user for employee details. Store it into array list and display it.
code :
Employee emp5 = new Employee();
for (int i = 1; i < a+1; i++) {
    Employee emp5 = new Employee();

emp5 = new Employee();

Remove a Student ID from an ArrayList, and display all the courses added into the arrayList

By : Robert Gillaspie
Date : March 29 2020, 07:55 AM
wish help you to fix your issue What is this line meant to do? db.add(db.remove(index));
You are removing it and then re-adding it, so that's why it isn't removed.
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